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stiks02 [169]
2 years ago
5

Which equation has the solution x=7? a-5x+3=45 B-3x−8=28 c-5x−1=−34 D-2x−5=9

Mathematics
1 answer:
Roman55 [17]2 years ago
6 0

Answer:

D

Step-by-step explanation:

2x-5=9

add 5 to both sides

2x=14

divide by 2 on both sides

x=7

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THE SEVEN APPLEWOMEN
Sliva [168]

Answer:

  zero

Step-by-step explanation:

If the same sum is received for the sale of 20 apples at price p as is received for the sale of 140 apples at price p, then we must have ...

  20p = 140p

  120p = 0 . . . . . . subtract 20p

  p = 0 . . . . . . . . . divide by 120

The price was zero.

7 0
3 years ago
Read 2 more answers
Find how many years it would take for an investment of $3700 to grow to $6000 at an annual interest rate of 6.2% compounded semi
lorasvet [3.4K]

Answer:

  7 years 11 months

Step-by-step explanation:

The future value formula for the value of a principal P invested at annual rate r compounded n times yearly for t years is ...

  FV = P(1 +r/n)^(nt)

For the given numbers, we want to find t:

  6000 = 3700(1 +.062/2)^(2t)

Dividing by 3700 and taking the logarithm, we get ...

  6000/3700 = 1.031^(2t)

  log(60/37) = 2t·log(1.031)

Dividing by the coefficient of t gives ...

  t = log(60/37)/(2log(1.031)) ≈ 7.92 . . . . . years

It will take about 7 years 11 months for the investment to grow to $6000.

7 0
3 years ago
What is the answer I'm having trouble?4(2t+6)=
Galina-37 [17]
4(2t+6)

8t+24 is the answer

4 0
2 years ago
Read 2 more answers
Jack spent 1/3 hour cleaning his room which fraction is equivalent
Vinil7 [7]

Answer:

2/6

Step-by-step explanation:

1/3

Write an equivalent fraction by multiplying

1/3 * 2/2

2/6

I hope this was useful!

4 0
3 years ago
The lines represented by the equations y = -X – 3 and
xz_007 [3.2K]

The equations y = -x -3 and 5y + 5x = -15 represents the same line option 'the same line' is correct.

<h3>What is linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have two equation of the line:

y = -x -3 and

5y + 5x = -15

From the equation 5y + 5x = -15:

Divide by 5 on the above equation:

y + x = -3

or

y = -x -3

The two equations y = -x -3 represents the same line.

Thus, the equations y = -x -3 and 5y + 5x = -15 represents the same line option 'the same line' is correct.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

3 0
1 year ago
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